Machine for indicating the force of blows



` (No Model.) 2 Sheets-Sheet 1.

J. TYLER.

MACHINE FOR INDIGATING THE FORGE 0F BLOWS.

'Patented Mar. 1, 1887.

9;. Wo. @Arta/m @da (No Model.)

2 Sheets-Sheet 2. LTYLERI MACHINE PoR INDIGATING THB FORGE 0F BLOWS. No. 358,706.

' PatentedMar. l, 1887;

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WWAEEEE- W Inh/ENTER- MJ 4' L* UNTTED STATES PATENT OFFICE.,

JOHN TYLER, or BOSTON, MASSAOHUSETTS.

MACHINE FOR INDICATING THE FORCE OF BLOWS.'

` SPECIFICATION forming part of Letters Patent No.358,706, dated March l, 1887.

Application filed June 16,1886.

To @ZZ whom, it may concern:

Be it known that I, JOHN TYLER, of Boston, in the county of Suffolk and State of Massachusetts, a citizen ofthe United States, have invented a new and useful Improvement in Machines for Indicating the Force of Blows, ofwhich the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming apart of this specincation, in describing its nature.

The object ofthe invention is to provide a simple and inexpensiveinstrument forindicating the force of blows;and it comprisesvarious details of construction and organization, all of which will hereinafter be described.

Referring to the drawings, Figure l is a view in plan of myimproved apparatus. Fig. 2 is a vertical central section thereof. Fig. 3 is a front elevation. Fig. et is a rear elevation, and Fig. 5 a vertical section illustrating a modified form of holding device.

A represents a cast-iron frame, having a tubular section, c, adapted to receive and hold the resistant spring A and the bracket or arm A27 which is cast therewith. The resistant spring is held within the tube or hole a of the frame, so as to bear against the shoulder c and against the pin c3, which is fastened to the spindle, rod, or bar B, which carries the pad or device C, against which the blow is struck or delivered, and both the spring and the bar, spindle,or rod are held in place by the cap D, which has a hole, d, through which the bar, spindle, or rod passes, and a lug, d', which hooks onto the lug cl2 on the casing a, and which projects upon the arm A, and is held in place thereto by the screw d3 and nut d4.4 The cross-pin a?, extending across the bar or rod, serves, in connection with the cap, as a stop in limiting the outward movement of the bar, and the resistant spring is arranged to bear against this pin.

The bar B supports at its outer end a bell or support, c, and this bell or support is secured to the end of the bar, rod, or tube by means of the lugs c', which overlap the head c2 of the bar, rod, or tube, and the screws c3, which pass through4 the lugs and head ci. The bell is filled with hair or other elastic or yielding material and supports a leather cover, c4, which is fastened thereto by a clamping-band, c5. The bar, rod, or spindle also has a scale,

Serial No. 205,33l. (No model.)

E,upou one side,`which preferably is made of brass or other similar material, and fastened thereto by screws, and there is arranged to slide upon the bar, rod, or tube a pointer or indicator, c,which comprises a band which surrounds the bar, rod, or tube on three sides, and is held together on the fourth sideI by a spring, c', so as to cause the band to bear with sufficient friction to hold the indicator in its place.

In use the indicator is moved inward to bring it to zero, and upon striking or punching the pad the rod, tube, or bar is moved inward, the

`indicator remaining stationary during such inward movement, and at the end thereof moving outward with the bar, rod, or tube, and thereby indicating the extent of the inward movement thereof, so that the extent of the compression of the spring is shown.

The arm or bracket A2 carries a clampplate, F, which is pivoted to the end thereof. There is also secured to the frame an independent arm, A3, which carries another clamping-plate, F', which is also pivoted to the end thereof, and which is adapted to be locked in place by a set-screw,f.

The independent arm A3 is made movable upon the tubular part of the frame, and is. pro- ,vided with a clamp, f', by which it is locked These two clamping-plates vF F thereto. serve to lock Vthe device to a door-frame, window-casing, pillar, or any other convenient place.

For the purpose of suspending the device or implement from a bracket or other support, Iemploy an arm, G, which is in some respects similar tothe arm A3. It is movable upon the tubular'part of the casing or frame A, has a clamp, g,by which it is fastened rigidly thereto, and carries at its end a plate, g', which is: pivoted to the end of the arm, and has holes g2, for the reception of bolts or screws for securing it to a bracket or arm, and also the holes g3, for receiving a bolt or pin for locking the arm G rigidly thereto, the arm G having one hole, gwhich receives such lockingpin or nut.

I have represented the plate g as having three holes, g3, which of course will provide for three different adjustments of the device; but as many holes for this purpose may be used as may be necessary.

This construction and organization of inv I OC) strument for indicating the force of blows is cheap and simple, and it 'provides means whereby it can be easily placed in position and moved from one point to another.

The faces of the clamping-plates F F' may be lined or covered `with felt to protect the support to which the device is attached.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- 1. In a device for indicating the force or strength of a blow,forgy1nnasiums and other purposes, the combination of a casing or frame comprising a casting having a hole for the reception of the resistant spring, the bracket or arm A2, carrying the clamp-plate F, and the independent arm A3, carrying a clamp-plate,

F', with said resistant spring confined in said hole, the bar, rod, or tube B, supporting the pad or other similar device, the cap D, secured in place as indicated, and the pin a3, substantially as described.

2. In a device for indicating the force or strength of a blow, for gymnasiums and other purposes, the combination of a frame compris-y 25 ing a casting having the tubular section a, the arm A2, holding a pivoted clamping-plate, F, the movable arm A3, a clamp for fastening it to the tube, its clamping-plate F', and lockingscrew f, the resistant spring A', rod, bar, or 3o tube B, and the pad C, substantially as described.

3. The combination of a support for a resistant spring, having means for fastening it to a door-frame, post, or other device, or for 3 5 suspending it, the said resistant spring, a bar, rod, or tube carrying at its end a striking-pad,

a scale carried by said rod, bar, or tube, and an indicator held thereon by friction, all substantially as described.

JOHN TYLER. Witnesses:

F. F. RAYMOND, 2d FRED. B. DoLAN. 

